3-(Bromomethyl)-2-(difluoromethyl)-6-iodopyridine-5-carboxylic acid
4-(Chloromethyl)-2-(difluoromethyl)-5-iodo-3-(trifluoromethyl)pyridine
4-(Chloromethyl)-2-(difluoromethyl)-3-iodo-5-(trifluoromethyl)pyridine
5-(Difluoromethyl)-2-methoxy-3-methylpyridine-6-carboxylic acid